Table 1.

Clinicopathological variables of the patient cohort

Clinical parameters	Number	Percentage
Number of subjects	850	100
Age – median (range), years	41 (19–63)
Ethnic group
African-Canadian	28	3.3
Asian	68	8.0
Caucasian	271	31.9
Hispanic	11	1.3
Indo-Canadian	11	1.3
Middle Eastern	27	3.2
Native-Canadian	11	1.3
Unspecified/unavailable	423	49.8
Diagnosis (sperm count in million/mL)
Pre-vasectomy	67 (>15)	7.9
Post-vasectomy	63 (0)	7.4
Unexplained infertility	283 (15–360)	33.3
Oligospermia	276 (0.01–15)	32.5
Azoospermia	20 (0–0.5)	2.3
Non-obstructive azoospermia	100 (0–0.24)	11.8
Obstructive azoospermia	39 (0–0.18)	4.6
Unknown diagnosis	2	0.2